A student designs a gravity experiment. She will time how long it takes different objects to fall from her school’s roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment’s design?(1 point)

Question

A student designs a gravity experiment. She will time how long it takes different objects to fall from her school’s roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment’s design?(1 point)
Responses

The experiment does not test enough objects.
The experiment does not test enough objects.

The school roof is not tall enough to test the effect of gravity on different objects.
The school roof is not tall enough to test the effect of gravity on different objects.

The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.
The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.

Gravity will not affect how long it takes for the objects to fall to the ground.

GPT-4o mini · Answer

The correct response is: **The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.** This is because in order to conduct a fair experiment and understand the effect of gravity on the fall time of the objects, they should ideally have similar characteristics to isolate the effect of gravity as the only variable influencing their fall time. Differences in shape, size, and mass can lead to variations in air resistance, affecting the results.